HideWin is a free utility that helps you hide top-level windows. The application sits in the system tray and can be opened with a pop-up menu. The program is very easy to use and does the job of a window shield. All you have to do is type the window's title into the title bar. The title must be capitalized and spaced properly. The program continuously searches for windows that match its criteria and displays them in its hidden state.
Portable HideWin allows you to hide any window without installing any software. The portable version is easy to install and works without any hassles. The program is also portable and does not require any additional settings. It is a great way to keep track of opened windows. Besides being free, Portable and HideWin allow you to hide any window you want. You can set a specific frequency for the process, and it will work automatically.
Another great feature of HideWin is that it does not offer a user interface. This means that you do not have to deal with dozens of windows that stay open until the task is finished. However, the app is completely functional and does not need any installation. It does not have a read-me file, but you can choose a title and click the "add" button. This way, you can easily identify all the windows on your screen.